Tweedlewink and Multiple Language Introduction

Greetings!
I have a five and a half month old son. We are currently doing some components of the Doman newborn program, LR, LM, and LMs (we are also doing IAHP’s word, picture, and math physical flash cards). We speak in two languages everyday and we sing songs in three languages. I am considering incorporating Tweedlewink and a reading program with the two other languages. I was wondering if anyone has any suggestions on when to introduce these additional components.
Also, would someone be able to shed some light on Tweedlewink serving as an EK tool? Are the topics very diverse? The sample lesson on youtube includes a lesson on paintings from what I remember. I love the idea of Tweedlewink DVDs but I am a little apprehensive about too much screen time.
Thanks in advance!